CN101326382A - Variable-flexibility spring support - Google Patents
Variable-flexibility spring support Download PDFInfo
- Publication number
- CN101326382A CN101326382A CNA2006800466151A CN200680046615A CN101326382A CN 101326382 A CN101326382 A CN 101326382A CN A2006800466151 A CNA2006800466151 A CN A2006800466151A CN 200680046615 A CN200680046615 A CN 200680046615A CN 101326382 A CN101326382 A CN 101326382A
- Authority
- CN
- China
- Prior art keywords
- annex
- bearing
- main body
- inserting member
- supporting member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/04—Wound springs
- F16F1/12—Attachments or mountings
- F16F1/126—Attachments or mountings comprising an element between the end coil of the spring and the support proper, e.g. an elastomeric annulus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/14—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only
- B60G11/16—Resilient suspensions characterised by arrangement, location or kind of springs having helical, spiral or coil springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/124—Mounting of coil springs
- B60G2204/1242—Mounting of coil springs on a damper, e.g. MacPerson strut
- B60G2204/12422—Mounting of coil springs on a damper, e.g. MacPerson strut anchoring the end coils on the spring support plate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/124—Mounting of coil springs
- B60G2204/1244—Mounting of coil springs on a suspension arm
Abstract
Support element (3) for a motor vehicle suspension spring (1), made up of a main part (6) and of a substantially rigid or semi-rigid insert (7), characterized in that the suspension spring (1) bears directly on the substantially rigid or semi-rigid insert (7).
Description
Technical field
The present invention relates to the suspension of motor vehicle field, more particularly, relate to the suspension of stiffness variable.
Background technique
Exactly, this type of suspension in response to the demand of the travelling comfort of vehicle universal day by day.
Comprise a kind of spring suspension assembly of manufacturing for obtaining the most frequently used solution of stiffness variable, spring wherein is the wire spring with variable cross section, this spring is placed on the element of being made by elastomer: therefore rigidity is minimum when the circle than minor diameter of this spring does not contact with resilient support members, increases along with the length of the circle that contacts with supporting member then.For the spring that provides supports, the latter can be clamped on the resilient support members, a solution also allows non-invasive the contacting with spring like this.
Yet the production of variable cross section spring is relatively expensive, and the solution that has dreamed up other is used to produce the assembly of a stiffness variable, particularly use the supporting member of variable-flexibility, the wire spring that this element then makes it to use a constant cross-section (for example, in a kind of mode of non-limit, see document EP 0924445).
For example, first embodiment of variable-flexibility supporting member is included on the supporting member surface that contacts with spring of being made by elastomer and forms one group of recess: compression stiffness minimum when static, at compression stage, these recesses are out of shape and the rigidity increase.Yet this solution neither be entirely satisfactory: particularly it has bad resistivity to gravel, and the gravel of accumulating between recess can damage spring.In addition, it does not cover the needs to quick increase rigidity, and its durable behavior is limited, is bearing alternating action because form the elastomer of supporting member.
Second embodiment of variable-flexibility supporting member is included in the inner rigid insert of for example being made by aluminium or plastics of placing of resilient support members.This inserting member can comprise a plurality of recesses as the surface that contacts with spring, and this makes it to obtain bigger maximum rigidity and has also strengthened durable behavior simultaneously.Yet,, still exist the As time goes on risk of mis-behave owing to form the elastomeric creep of supporting member.
Summary of the invention
The objective of the invention is to propose a kind of bearing spring supporting member of variable-flexibility, this supporting member does not have above-mentioned shortcoming and manufactures simple and cheap.
Purpose of the present invention realizes by a kind of supporting member that is used for the suspension of motor vehicle spring, this supporting member comprises main body and rigidity or semirigid inserting member basically, it is characterized in that this bearing spring directly is placed in this basically on rigidity or the semirigid inserting member.
Advantageously, this inserting member also plays the effect that spring is centered on supporting member according to the present invention.
In the first embodiment, it is conical bearing that the main body of supporting member is included near be recessed into basic of its running shaft, from this bearing, essentially coaxially extend second cone-shaped section more less than the diameter of this bearing, it is recessed near running shaft equally, and the present invention has one or more following features:
-this main body comprises a saturated flange (saturation lip), and the diameter of this saturated flange is significantly greater than the diameter of the pedestal of this main body,
-this saturated flange places on the bearing of this main body, and relative with this second cone-shaped section,
-this inserting member has and the basic similarly shape of this main body, and covers second cone-shaped section of this main body in assembling process substantially,
In case-this inserting member is nestable on the bearing according to main body of the present invention, the pedestal of this inserting member just constitutes flange shape saturated edge, being used to improve the durable behavior (performance) of this supporting member,
-relative with the pedestal of inserting member, second cone-shaped section of this inserting member comprises a flange near its smaller diameter portion, the diameter of this flange is greater than the minimum diameter of this second cone-shaped section,
-this spring be inserted into this inserting member bearing upper surface and place between the lower surface of the flange on second tapered segment of this inserting member; By the clamping of suitable projection this spring is remained in its accommodating part,
The diameter at the saturated edge of flange-like of-this inserting member equals to be formed on the diameter according to the saturated flange on the base portion of the bearing of supporting member main body of the present invention substantially,
-this main body is made by elastomer, rubber for example,
-this inserting member is made of rigidity plastics, for example polyurethane.
In second embodiment, this inserting member is semirigid, do not comprise the saturated edge of flange-like, be provided with one group of fin on the lower surface of the pedestal of this inserting member, the recessed rib that this fin is designed to one group of coupling on the upper surface of support with supporting member main body according to the present invention engages.
Description of drawings
To show other feature and advantage when below the reference accompanying drawing is read, illustrating, in the accompanying drawings:
-Fig. 1 is the schematic overall perspective view of body element in a bearing spring and its environment,
-Fig. 2 is the schematic cross-section along symmetry plane according to first embodiment of supporting member of the present invention,
-Fig. 3 A and 3B are the schematic cross-sections along symmetry plane according to critical piece first embodiment of supporting member of the present invention,
-Fig. 4 is for conventional draft hitch with for the indicatrix of the bearing spring of first embodiment of the present invention,
-Fig. 5 is according to the supporting member of second embodiment of the present invention schematic cross-section along symmetry plane,
-Fig. 6 A and 6B are according to the critical piece of the supporting member of the second embodiment of the invention schematic cross-section along symmetry plane.
Embodiment
In Fig. 1, schematically show and comprise bearing spring 1 as the bearing spring assembly known to the routine in the prior art, the two ends of this bearing spring contact with a upper support element 3 with supporting member 2 once respectively, and lower support element 2 links to each other with vehicle body 5 with the lower support frame 4 of vehicle by the proper device (not shown in figure 1) respectively with upper supporting piece 3.According to embodiment well known in the prior art, these supporting members 2 and 3 comprise such part separately, and this part plays the effect that centers and allows this bearing spring 1 with respect to lower support frame 4 with vehicle body 5 is fixed and reproducible location.Make the embodiment of variable rate suspension according to same known being used in the prior art, when bearing spring 1 was the wire spring of constant cross-section, the upper supporting piece 3 that is connected with the vehicle body 5 of vehicle had variable flexible.
To shown in Figure 5, main body 6 is made of bearing 8 and annex 9 as Fig. 2, and they are essentially conical butt and coaxial with running shaft Z, and the maximum diameter of annex 9 is significantly less than the minimum diameter of bearing 8.When suspended rack assembly was assembled on the vehicle, the larger-diameter lower surface 10 of bearing 8 contacted with vehicle body 5, and 9 upper surfaces 11 from bearing 8 of annex extend in the mode that is up to the diameter minimum from diameter.Make for making it lighter and being easier to, in bearing 8 and annex 9, make an axial valley.Advantageously, main body 6 by the plastics of relative rigidity for example polyurethane make.
In first embodiment of the present invention, more specifically shown in Fig. 2,3A and 3B, the diameter of the lower surface 10 of bearing 8 increases and forms a flange 12 or saturated flange significantly, this flange act on following will the detailed description in detail.
According to the present embodiment, the shape of the inserting member 7 of supporting member 3 is similar to the shape of the main body 6 of this supporting member 3 substantially.Therefore this inserting member 7 comprises a pedestal 13 and an annex 14.Pedestal 13 and annex 14 are essentially conical butt and coaxial, and annex 14 extends in the mode that changes to minimum diameter from maximum diameter from the upper surface 15 than minor diameter of pedestal 13.This inserting member 7 also comprises axial valley, and the external shape and the size of the annex 9 of the interior shape of this recess and size and main body 6 are complementary.The maximum diameter of the pedestal 13 of inserting member 7 is significantly greater than the minimum diameter according to the bearing 8 of the main body 6 of this bright supporting member 3, and the bottom of pedestal 13 also comprises a par 16, and the shape and size on the top of the bearing 8 of the main body 6 of the shape and size of this par and supporting member 3 are complementary.The upper surface 17 than minor diameter of the annex 14 of this inserting member 7 also comprises a larger-diameter flange 18, and the effect of this flange will be in following detailed description.
For this embodiment of the present invention, to make by a kind of plastics according to the inserting member 7 of supporting member 3 of the present invention, these plastics are bigger than the rigidity that is used to make according to the material of the main body 6 of supporting member 3 of the present invention.
When main body 6 and inserting member 7 assembled formation during according to supporting member 3 of the present invention, and as shown in Figure 2, this inserting member 7 is placed in the top of the bearing 8 of main body 6 owing to the par 16 that is arranged on its underpart.Therefore inserting member 7 is nestable on the main body 6 of supporting member 3 according to the present invention, and the top edge of the bearing 8 of the main body covered part 6 of the lower limb 19 of the pedestal 13 of inserting member 7 or saturated edge.Bearing spring 1 is placed between the lower surface of the upper surface of pedestal 13 and flange 18 around the annex 14 of inserting member 7, this annex 14 plays equally and bearing spring 1 is centered and allows the effect that it can repeatedly locate, and flange 18 plays the effect of stop member, comes out from the accommodating part that limits thus of this spring to prevent bearing spring 1.
This layout make it greatly to limit or even eliminate and between bearing spring 1 and supporting element thereof, to gather gravel, reduced the risk that spring 1 is damaged by gravel thus.
In addition, when spring was compressed, the existence of saturated flange 19 and configuration made it to change the rigidity of this supporting element, particularly under saturation state-promptly when bearing spring is compressed fully, as shown in Figure 4.On the stiffness curve figure of this its supporting element of drawing according to the compression of bearing spring 1, the situation of the designed supporting member that does not have saturated edge 19 3 in the curve representative of dotted line as first embodiment of the present invention, and on behalf of bearing spring 1, the curve of solid line be placed on as the situation on the designed supporting member that comprises saturated edge 19 3 of first embodiment of the present invention.Very clear, the speed that rigidity increases under latter event is faster.
The existence at this saturated edge 19 also makes it to improve the durable behavior of the material (in this case, just form according to the main body 6 of supporting member 3 of the present invention material) of the flex section of the indicatrix that this supporting member is provided.
12 of the saturated flanges of the lower surface 10 of main body 6 make it to eliminate with unexpected the contact noise problem that be associated of this saturated edge 19 with the vehicle body 5 of vehicle.Preferably, but not exclusively, this saturated flange 12 by elastomer for example rubber make; Yet, when main body 6 by a kind of be not elastomeric material when making (for example, as non-limiting example, when it is made by polyurethane), saturated flange 12 will preferably obtain by the elastic body shim (for example rubber) with suitable dimension, and this pad is placed between the vehicle body 5 of the lower surface 10 of bearing 8 of main body 6 and vehicle.
Should be noted that, be the diversity of the diameter of the line that increase to form bearing spring 1, inserting member 7 is two materials also, and wherein a part is flexible and another is a rigidity.
Fig. 5,6A and 6B illustrate second embodiment of the present invention, and wherein the inserting member 7 of supporting member 3 is semirigid, preferred but nonexcludability ground, by elastomer for example rubber make.In the present embodiment, the main body 6 of the supporting member 3 shown in Fig. 6 A is similar to the main body 6 described in first embodiment of the present invention, but the lower surface 10 of its bearing 8 does not comprise saturated flange 12.In addition, the upper surface 11 of its bearing 8 is provided with the basic radially also equally distributed recessed rib 20 that is: the effect of these recessed ribs 20 will be in following explanation.In alternate embodiment, rib 20 is replaced by the groove of one or more suitable shapes with one heart.
In the present embodiment, shown in Fig. 6 B, inserting member 7 is formed by a pedestal 21, this pedestal is from than the basic one-tenth conical butt in the surface of minor diameter, go out the basic Frusto-conical annex 22 that is from this than coaxial extension on the surface of minor diameter, the top of this annex is furnished with one and is hemispheric lid 23 substantially.The maximum diameter of pedestal 21 equates substantially with the diameter of the upper surface 11 of the bearing 8 of main body 6, like this, after main body 6 and inserting member 7 assembled formations are according to supporting member 3 of the present invention, the upper surface of the bearing 8 of the not main body covered part 6 of pedestal 21 of inserting member 7, but peripheral concordant with it.
Illustrate that at first embodiment of the present invention inserting member 7 comprises an axial valley on its whole height as above, the shape and size of the outer surface of the annex 9 of the shape and size of this recess and main body 6 are complementary.
At this is that the periphery of Frusto-conical annex 22 also is provided with and be the groove 24 of cylindricality substantially substantially: the size of this groove 24 is according to the part qualification of the line that forms bearing spring 1.Thereby this bearing spring 1 is installed and is slipped into and remains in the groove 24, and this cross section that allows to be used for the line of bearing spring 1 has big diversity.Therefore this solution also greatly reduces the friction of spring to the inserting member 7 of supporting member 3, and has limited the wearing and tearing with spring 1 intersection greatly.
In addition, 21 lower surface of the pedestal of inserting member 7 comprises par 25, forming one group in this par is radially fin 26 substantially, and shape, size and the distribution of the recessed rib 20 on the upper surface 11 of the bearing 8 of the shape of described fin, size and distribution and main body 6 are complementary.Recessed therein rib 20 is by in the alternate embodiment that locked groove replaced, and fin 26 forms one group of flange that can interact with these grooves/match on the lower surface of pedestal 21.
When main body 6 and inserting member 7 assembled formation during according to the supporting member 3 of second embodiment of the invention, inserting member 7 is nestable on the annex 9 of main body 6, the fin 25 of inserting member 7 engages with the recessed rib 20 of aforementioned body part 6, allows two parts of supporting member 3 to lock mutually thus.So this main body 6 plays the positive effect of this supporting element, rib 20 and 26 also makes it to adjust the rigidity of assembly.In this case, the edge of par 25 constitutes a saturated recessed alms bowl, and when bearing spring was in maximum compression, inserting member 7 was pressed against on the main body 6 of supporting member 3.
Therefore, the present invention makes it to make for bearing spring 1 supporting element of stiffness variable, and this supporting element had both had the ability of good opposing gravel accumulation, had the durability of prolongation again.Introduced this two kinds of embodiments as an example, it is therefore to be understood that under the situation that does not deviate from spirit of the present invention, might make the inserting member described in first embodiment not have saturated edge 19.
Claims (10)
1. the supporting member (3) that is used for suspension of motor vehicle spring (1), comprise main body (6) and rigidity or semirigid inserting member (7) basically, it is characterized in that this bearing spring (1) directly is placed in this basically on rigidity or the semirigid inserting member (7).
2. supporting member as claimed in claim 1 (3), it is characterized in that, this main body (6) is made of bearing (8), this bearing is from having the basic one-tenth of upper surface (11) conical butt than minor diameter, extend one coaxially from this upper surface and basic be Frusto-conical annex (9), the maximum diameter of this annex is significantly less than the minimum diameter of this bearing (8).
3. supporting member as claimed in claim 2 (3), it is characterized in that, this inserting member (7) is made of pedestal (13), this pedestal is from than the basic one-tenth conical butt of the upper surface of minor diameter, extend a Frusto-conical basically annex (14) coaxially from this upper surface, the maximum diameter of this annex is significantly less than the minimum diameter of this pedestal (13), this inserting member (7) also comprises an axial valley, the shape and the outside dimensions of the annex (9) of the shape of this recess and Inner Dimension and this main body (6) are complementary, and are provided with par (16) in the bottom of the pedestal (13) of this inserting member (7).
4. supporting member as claimed in claim 3 (3), it is characterized in that, this main body (6) and this inserting member (7) be by assembling in this par (16) the upper surface (11) of the bearing (8) of this main body (6) is nestable, the pedestal (13) of this inserting member (7) then the bottom cover this upper surface (11) fully and constitute saturated edge (19) around this upper surface.
5. as each described supporting member (3) in the claim 1 to 4, it is characterized in that, lower surface (10) around the bearing (8) of this main body (6) is extended with a saturated flange (12), and the diameter of this saturated flange is significantly greater than the diameter of this lower surface (10).
6. as each described supporting member in the claim 1 to 5, it is characterized in that the top of the annex (14) of this inserting member (7) comprises a flange (18), the diameter of this flange is significantly greater than the minimum diameter of this annex (14).
7. the draft hitch of motor vehicle, it is characterized in that, between the lower surface of the flange (18) of the upper surface of the pedestal (13) of the inserting member (7) of supporting member as claimed in claim 6 (3) and this inserting member (7), lay bearing spring (1) around the annex (14) of this inserting member (7).
8. supporting member as claimed in claim 2 (3), it is characterized in that, this inserting member (7) is made of pedestal (21), this pedestal is from than the basic one-tenth conical butt of the upper surface of minor diameter, extend one coaxially from this upper surface and be Frusto-conical annex (22) substantially, the top of this annex is furnished with the basic hemispheric lid (23) that is; And this inserting member (7) comprises axial valley on its whole height, and the shape and the outside dimensions of the annex (9) of the shape and size of this recess and this main body (6) are complementary.
9. supporting member as claimed in claim 8 (3) is characterized in that, the diameter of this pedestal (21) equals the diameter of upper surface (11) of the bearing (8) of this main body (6) substantially.
10. supporting member (3) as claimed in claim 8 or 9 is characterized in that, is that for being furnished with substantially on the periphery of Frusto-conical annex (22) groove of cylindricality (24), this groove are used to admit bearing spring (1) the basic of this inserting member (7).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0553875 | 2005-12-14 | ||
| FR0553875A FR2894639B1 (en) | 2005-12-14 | 2005-12-14 | SPRING SUPPORT WITH VARIABLE FLEXIBILITY |
| PCT/FR2006/051197 WO2007068835A1 (en) | 2005-12-14 | 2006-11-20 | Variable-flexibility spring support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101326382A true CN101326382A (en) | 2008-12-17 |
| CN101326382B CN101326382B (en) | 2011-01-12 |
Family
ID=36678536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800466151A Expired - Fee Related CN101326382B (en) | 2005-12-14 | 2006-11-20 | Variable-flexibility spring support |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US8061690B2 (en) |
| EP (1) | EP1960685B1 (en) |
| JP (1) | JP5320069B2 (en) |
| CN (1) | CN101326382B (en) |
| BR (1) | BRPI0619886A2 (en) |
| FR (1) | FR2894639B1 (en) |
| RU (1) | RU2419003C2 (en) |
| WO (1) | WO2007068835A1 (en) |
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| US6254072B1 (en) * | 1999-03-31 | 2001-07-03 | Daimlerchrysler Corporation | Spring isolator and jounce bumper for a motor vehicle suspension |
| FR2799693B1 (en) * | 1999-10-14 | 2002-01-25 | Peugeot Citroen Automobiles Sa | LOWER SUPPORT DEVICE FOR SUSPENSION SPRING, ESPECIALLY AUTOMOTIVE |
| JP2001140964A (en) * | 1999-11-10 | 2001-05-22 | Kinugawa Rubber Ind Co Ltd | Attaching structure for spring seat rubber in vehicular suspension |
| ES2232606T3 (en) * | 2000-02-23 | 2005-06-01 | Woco Avs Gmbh | HYDRAULIC BEARING. |
| US7357382B2 (en) * | 2001-07-25 | 2008-04-15 | Matthew Warren, Inc. | Hydraulic load centering spring perch |
| DE10334906B4 (en) * | 2002-07-30 | 2018-11-15 | Andreas Stihl Ag & Co. Kg | Anti-vibration element |
| JP4117787B2 (en) * | 2003-04-21 | 2008-07-16 | 東洋ゴム工業株式会社 | Seat spring rubber |
-
2005
- 2005-12-14 FR FR0553875A patent/FR2894639B1/en not_active Expired - Fee Related
-
2006
- 2006-11-20 RU RU2008128460/11A patent/RU2419003C2/en not_active IP Right Cessation
- 2006-11-20 CN CN2006800466151A patent/CN101326382B/en not_active Expired - Fee Related
- 2006-11-20 WO PCT/FR2006/051197 patent/WO2007068835A1/en active Application Filing
- 2006-11-20 JP JP2008545049A patent/JP5320069B2/en not_active Expired - Fee Related
- 2006-11-20 US US12/096,385 patent/US8061690B2/en not_active Expired - Fee Related
- 2006-11-20 BR BRPI0619886-4A patent/BRPI0619886A2/en not_active IP Right Cessation
- 2006-11-20 EP EP06831359.2A patent/EP1960685B1/en not_active Not-in-force
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102639897A (en) * | 2009-09-25 | 2012-08-15 | 利萨·德雷克塞迈尔有限责任公司 | Spring support and method for producing the same |
| CN102639897B (en) * | 2009-09-25 | 2014-05-07 | 利萨·德雷克塞迈尔有限责任公司 | Spring support and method for producing the same |
| CN103089877A (en) * | 2013-02-01 | 2013-05-08 | 河南万泰机械有限公司 | Fixing and connecting structure of tension and pressure spring |
| CN105008154A (en) * | 2013-03-11 | 2015-10-28 | 标致·雪铁龙汽车公司 | Cup and element for retaining same on a helical spring |
| CN104179866A (en) * | 2014-07-21 | 2014-12-03 | 赵士立 | Connecting device for compression spring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101326382B (en) | 2011-01-12 |
| FR2894639B1 (en) | 2011-08-19 |
| US20080290572A1 (en) | 2008-11-27 |
| EP1960685B1 (en) | 2016-10-19 |
| JP2009519419A (en) | 2009-05-14 |
| FR2894639A1 (en) | 2007-06-15 |
| RU2419003C2 (en) | 2011-05-20 |
| BRPI0619886A2 (en) | 2011-10-25 |
| EP1960685A1 (en) | 2008-08-27 |
| RU2008128460A (en) | 2010-01-20 |
| JP5320069B2 (en) | 2013-10-23 |
| WO2007068835A1 (en) | 2007-06-21 |
| US8061690B2 (en) | 2011-11-22 |
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